Accessible only by boat, this centuries-old island fort never saw troops or combat.

Explore the dark underground corridors of this graffiti-covered former military fortification.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

An abandoned train station in Munich constructed for the 1972 Olympic games.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

Go surfing on this urban wave, "hacked" by local surfers.

A subterranean display of public art and architecture.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This Late Gothic building that once housed Erasmus is now known as the filming location of "Suspiria."

This medieval cathedral houses stained-glass windows featuring saints and pretzels.

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

A stonemason's hilarious revenge came in the form of this peculiarly positioned gargoyle.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

A famed artist's inspiring work of peace and tolerance.

This Connecticut video store has a vast and varied archive that contains everything from 'Koyaanisqatsi' to 'The King's Speech.'

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

The cave where two British judges hid in exile after sentencing the king to death.